Dear All, do you confirm that the only way to use solvers like fzero in st state computation is to write the external matlab steady state file, skipping the steady_state_model block? many thanks for your advice best Marco --- Marco Ratto, Finance and Economy Joint Research Centre European Commission, TP 361, 21027 ISPRA(VA), ITALY Tel: +39 0332 78 3794 Fax: +39 0332 78 5752, marco.ratto@ec.europa.eu